Peru

Corihuarmi Mine

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Overview

Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
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Mine Life... Lock
ShapshotThe Corihuarmi Mine is a fully permitted operating gold mine consisting of 10 mining concessions.

Owners

SourceSource
CompanyInterestOwnership
Minera IRL Ltd. 100 % Indirect
Minera IRL S.A. (operator) 100 % Direct
Minera IRL Ltd. owns and operates the Corihuarmi Gold Mine through its subsidiary Minera IRL S.A.

Contractors

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Deposit type

  • Epithermal

Summary:

The Property is located at the northern extent of the southern Peru Au-Ag epithermal belt. Mineralisation identified at the Property is of a high-sulphidation (HS) epithermal type hosted in volcanic rocks close to the Chonta fault, a regionally significant NNW trending structure. The Chonta fault is a major geological break which separates Cenozoic volcanic deposits from folded Paleozoic sediments. Zoned alteration and mineralisation are centred on dacitic and rhyodacitic domes intruded close to the Chonta Fault at its intersection with subordinate NE faults. Outcrop is obscured by vegetation and quaternary deposits. The north-northwest trending Chonta fault, obscured in part by quaternary deposits, separates folded Cretaceous and Jurassic sediments from Cenozoic volcanics and is the main conduit for extensive hydrothermal alteration. Hydrothermal alteration related to inferred buried intrusions is recorded to the southwest of the Chonta fault in Cenozoic volcanics. Centres of alteration, observable on remote sensingimagery, are mapped along the Chonta fault. Alteration is particularly strong where secondary northeast faults intersect the Chonta fault. Variably sub-cropping and outcropping dacite and rhyodacite domes and more recent volcanic deposits dominate geology and the Property. Domes broadly define the margins of a collapsed caldera structure measuring 4.5 by 3.5 km, elongate along a north-northwest trend (Coffey, 2010). The NNW Andean trend is well developed and is the dominant orientation of faulting and fold hinges at the Property. The hydrothermal system which drove alteration and mineralisation at the Property is focused along the Chonta fault. Intense alteration, brecciation and mineralisation are intimately associated with the Chonta fault, specifically where it is crosscut by east-west and northeast tensional structures. Zoned alteration, typical of a high-sulphidation (HS) epithermal system, is recognised at the property. Zones of vuggy silica occur within a more widely developed silica and alunite alteration assemblage. These zones of alteration grade into more expansive argillic alteration and localised but distal zones of propylitic alteration. Vuggy silica centres approximately align along the NNW Andean trend. Zones of increased grade are typically associated with vuggy silica in the near surface oxidation zone. Interpretation of drilling data indicates that oxidation extends some 80 m below the surface.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits202320222021202020192018201720162015
Gold oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe23,30322,68424,70923,39923,917
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.

Operational metrics

Metrics20222021202020192018201720162015
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe4,233,665 t3,948,634 t3,109,206 t3,040,331 t2,965,576 t
Waste  ....  Subscribe  ....  Subscribe  ....  Subscribe2,686,333 t2,030,322 t2,213,433 t1,430,311 t825,985 t
Tonnes processed  ....  Subscribe  ....  Subscribe  ....  Subscribe4,233,665 t3,948,634 t3,109,206 t3,040,331 t2,965,576 t
Total tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe
Daily ore mining rate  ....  Subscribe  ....  Subscribe  ....  Subscribe9,000 t9,000 t8,500 t8,300 t

Production Costs

CommodityUnits202220212020201920182017
Cash costs Gold USD
Total cash costs Gold USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 932 / oz   909 / oz   849 / oz  
Total cash costs (sold) Gold USD
All-in sustaining costs (AISC) Gold USD  ....  Subscribe  ....  Subscribe 1,136 / oz   1,111 / oz   1,106 / oz  

Financials

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ....  Subscribe
Capital expenditures M USD  ....  Subscribe  ....  Subscribe 3.3   1.8   5.6  
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 31.8   28.9   30.7  
Gross profit M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 9.9   8   9.7  
Operating Income M USD  ....  Subscribe  ....  Subscribe 2   0.8   4.1  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe -3.5   2.8  
After-tax Income M USD -6  

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 26, 2023

EmployeesYear
...... Subscription required 2022
...... Subscription required 2021

Aerial view:

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